出典:Wiktionary
出典:『Wiktionary』 (2025/01/19 02:32 UTC 版)
time signal (plural time signals)
出典:『Wiktionary』 (2010/06/12 06:12 UTC 版)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/19 05:19 UTC 版)
A time signal is a visible, audible, mechanical, or electronic signal used as a reference to determine the time of day.